and the state of our union is strong. >> tuesday, president obama delivers this year's address live on c-span. with our preview program starting at 8:00 p.m. eastern and the president at 9:00. followed by the g.o.p. response and your reaction. the state of the union. tuesday night on c-span. c-span radio and cespn.org. historian on mary fod lincoln. >> three her four children die. one in the white house and one after her husband's asars nation sitting next to her at the theater. the kinds of grief this woman was going through, amazing. but folks demonized her for that and thought she was crazy. well, we found out she wasn't crazy. but mary todd was a very significant person. and i hope someday we get a better view of the range of things that influenced her life. not just the tragedy. >> c-span's new series, first ladies, influence and image. a first of its kind project for television, comprg the public and private lives of the women who served as first lady. season one begins in just over a week. on presidents' day, february 18, at 9:00 p.m. eastern and pacific on c-span, c-span radio